Apparatus for withdrawing air and water from steam-condensers.



D. B. MORISON.

APPARATUS FOR WITHDRAWI-NG-AIR AND WATER FROM STEAM GONDENSERS.

uruornon rmm 001215, 1908.

967,81 0. Q Patented Aug. 16, 1910.

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Patentd Aug. 16, 1910.

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D. B MORISON. I APPARATUS FOR WITHDBAWING AIR AND WATER PROM STEAMGONDENSERS.

urmonxon FILED 00115, 1908.

967,810. Patented Aug. 16, 1910.

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} D. B. MORISON. v APPARATUS FOR WITHDRAWING AIR AND WATER FROM STEAMGONDENSEBS,

APPLICATION FILED 001151608. Patented Aug. 16,

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

DONALD BARNS MORISON, HARTLEPOOL, ENGLAND.

APPARATUS FOR WITHDRAWING AIR AND WATER FROM STEAM- CONDENSERS.

To all whom it may concern.

Be it known that I, DONALD BARNS MoRI- SON, a subject of the King ofGreat Britain and Ireland, residing at Hartlepool, in the county ofDurham, England, have invented Improvements in or Relating to Apparatusfor Withdrawing Air, Vapor, and Water from Steam-Condensers, of whichthe following is a specification.

This invention relates to apparatus for Withdrawing and discharging airand vapor, and, it may be, water of condensation, from steam condensers,and is applicable to condensers working under a vacuum and in which thewater of condensation and the mixture of air and vapor are withdrawn anddischarged from the condenser through separate outlets, the condenserbeing of the surface contact, direct contact or water jet ejector types.

The principal object of the invention is to enable aerated vapor to bewithdrawn from a condenser and discharged by means of a steam et in amore effective and advantageous manner than heretofore. The presentinvention is characterized for this purpose by the fact that the aeratedvapor is withdrawn and discharged from the condenser by the action of asteam jet arranged behind and in series with a water jet ejector, thesteam jet being arranged to discharge into the aerated vapor before thesame reaches the water jet ejector. WVhen aerated vapor is withdrawn anddischarged from a condenser by a steam jet and water jet ejectorarranged as described, the minute particles of water resulting from thecondensation of the steam are in a condition highly favorable to theirbeing coated and supercharged with the air into which they aredischarged, and of being by their kinetic energy, impelled forward andcaused to combine or coalesce with each other and, in their momentarilysupercharged condition, to be, by their momentum, driven into the waterof the water jet ejector and be thereby discharged in a very effectivemanner. This utilization of the kinetic energy of the steam jet forcausing the air to be efiectually absorbed and incorporated with thewater of the water jet ejector, constitutes a technical effect ofconsiderable practical value and is an important feature of theinvention. This action is to be differentiated from the known ejectorapparatus in which steam and water jets are arranged concentrically andnear Specification of Letters Patent.

Application filed. October 15, 1908.

Patented Aug. 16, 1910.

Serial No. 457,880.

together in such a manner as to first combine to form a combined jet ofsteam and water which is then used to induce air and vapor to enter theejector apparatus in a lateral direction from the condenser and bedischarged thereby. In such an arrangement, water particles resultingfrom condensation of the steam jet cannot be supercharged with airbefore coming in contact with the water et and caused to coalesce and bytheir momentum be driven into and combined with the water jet so as tobe thereby instantly and effectually discharged with the contained airaccording to the present invention, so that such apparatus cannot actvery effectually to withdraw aerated vapor from the condenser. Theaction of the new aerated vapor ejecting apparatus is also to bedifferentiated from the action of a steam jet in the known arrangementof air pump system in which the steam from the steam jet used towithdraw air and vapor from a condenser is delivered into and condensedwithin an auxiliary condenser and the air withdrawn from the latter by areciprocating or equivalent mechanically operated air pump. In thelatter arrangement, the kinetic energy of the steam jet is uselessly dissipated in the supplementary condenser and the heat in the steam fromthe steam jet is largely absorbed by the condensing water in suchauxiliary condenser and discharged with such water, thereby involvingthermal loss. On the other hand, by the present invention, not only arethe water particles resulting from the condensation of the steamsupercharged with air and their kinetic energy utilized to cause them tocoalesce with each other and with the water in the water jet ejector butthe latent heat of the steam from the steam jet and also the latent heatof the water vapor withdrawn from the condenser, is, to a large extent,absorbed by the water flowing through the water jet ejector and canthereby be conserved and usefully employed. It has been found by carefulexperiment that (a) the temperature of the water passing through thewater jet ejector may be very considerably higher than the water ofcondensation in the condenser and that therefore this water can bepassed through the water jet ejector and afterward be in part used asfeed water for the boilers, with great thermal advantage, and (b) thatthe cooling'of this water, or such part thereof as is jet ejector, needonlybe resorted to when the amount of condensed water in the maincondenser is curtailed by re'ason of the power of the engine beingdiminished, or' by the engine being stopped.

The water jet ejector may be of various kinds. It may comprise a staticwater spraying device, or a mechanically operated water spraying deviceof known kind; or a solid water jet device, or both a water spray- .ingdevice and a water jet device combined.

These devices are all hereinafter included in the term, water jetejector.

In the case of direct contact condensers, the water of condensation maybe discharged independently of the water jet ejector which 'may besupplied by other water. \Vhere however the water available for'use inthe water jet ejector is unfit for use in boilers, as in the case of seawater on ship board, the water supplied to the water jet ejector may,with advantage, be water of condensation that is in partrepeatedly used.

In some cases the water may be supplied to the water jet ejector by apump either from a vessel orreservoir into which it is de-.

livered by another I1pump from the condenser, or from a ta into whichthe water jet ejector delivers. Sometimes the water may be cooled beforebeing delivered into the water jet ejector.

The condensed steam water may in some cases be withdrawn from thecondenser by head and pressure pumps through an elevated pipe orreceiver whereby an artificially produced head or pressure of water canbe obtained when such a head or pressure is necessary but is notconveniently obtained with known arrangements, for the satisfactoryworking of the system;

In order to maintain an approximately a constant and adequate supply ofwater to the water jet ejector under varying conditions of load in themain condenser, the dischar e pipe from the said water jet ejector mayhe provided with means such as a valve or pum some cases, the inducingaction of this water can be utilized in lieu of, or as an auxiliary to,thesaid pump for causing the discharge of condensed steam water from thecondenser to the receiver and be at the same charged into the rece ver,the steam may be condensed in the receiver by contact with condensedsteam water simultaneously delivered into the receiver, preferably inthe form of a spray. The air and unc'ondensed which, discharges the saidwater either directly or through a cooler; or in,

vapor maybe led from the receiver to the I water jet ejector with orwithout theaid of .a jet of steam, the water being drawn ofl from thereceiver by a pump, and water being supplied to the water jet ejector byany convenient means, as by another pump.

Ifthe condensed steam watersupplied from-thej-receiver be dischargeddirectly by a pressure pump, air and vapor may be withdrawn from thecondenser, or from the receiver, or from each of these devices by, andbe discharged through, a separate water jet ejector to which water maybe supplied under pressure by any convenient means as by anotherpressure pump.

Apparatus according to the present invention is applicable to condensersof both the surface and jet types. The pum 5 may ad- -vantageously be ofthe oentri gal type,-

but may, if desired, be of the reciprocating or other suitable type. Thewater jet ejector mav be of the single or multiple nozzle type,

and be providedwith the tisualfittings; If

desired, two or more water jet ejectors may be used, arranged inparallel or in series, and the number used at any one time may be variedto suit the load on the condenser and the amount of air leakage.

In the accom anying drawings, Figures 1 to 7 inclusive, slow, inelevation, various arrangements of ap aratus embodyin the presentinvention, t e several figures eing, for simplicity, shown more or lessdiagrammatically.

According to Fig. 1, a is acondenser of the surface type having anoutlet ipe b for air and vapor and a separate out etpipe 0 for water ofcondensation. g is a steam nozzle whereby a jet of steam can be causedto enter the pipe I) and become mixed with the air and vapor therein.The pipe 6 is connected to a water ejector comprising,- in this example,a su plementary spraying jet nozzle i provide with a water inlet pipe(1, and a main water jet nozzle e arranged in series with the nozzle (1and having a water inlet a.

Tiither the water spraying nozzle d, or the water jet nozzle e, may beused independently, or both may be used together in series coalesce andby their momentum are driven into the water of the water jet ejector, ashereinbef ore described, the whole t ien travelm" onward at a highvelocity through the discharge pipe f, the discharge being assisted bythe water jet issuing through the nozzle e, if this nozzle be'also used.

Fig. 2 shows air and vapor withdrawing apparatus according to theinvention combined with a steam condenser from .whieh the condensedsteam water is withdrawn by head and pressure pumps. In this example,

the air and vapor outlet pipe Z) with steam.

' from the main condenser and from the steam jet, when the latter isused, and when it is important that this water loss should not takeplace, as in marine installations, the water supplied to the ejector maybe previously cooled condensed steam water. In the example (Fig. 2),such water is delivered to the ejector ethrough pipe 6 by a centrifugalpump h, the resulting mixture of condensing water, condensed steam waterand air being discharged through the pipe f into an open tank 1" whencethe water flows through a pipe j into a cooler located at the bottom ofbut separate from the main condenser on, and thence through a pipe m tothe pump h for re-use. Excess of water, due to the condensation of thevapor withdrawn with the air from the condenser a, escapes from the tanki through an overflow pipe n. Condensed steam water is withdrawn *fromthe main condenser a through a pipe 0 by a head pump 10 which deliversit through a pipe 9 into a raised receiver 1" which is connected to thetop of the condenser a by a pressure equalizing pipe .9, and from whichthe water passes downward through a pipe t to a pressure pump u fordelivery through a pipe 0) into a feed water tank w.

The condensed steam water may be de livered to the water jet ejector bya pump which obtains the water for this purpose from the receiver intowhich the condensed steam water from the condenser is discharged byanother pump, additional water being however delivered to the water jetejector from the cooler. An arrangement of this kind is shown in Fig. 3,the condensed steam water, which is delivered from the receiver 1 to theejector (Z by the pump a, being used in the ejector d, which, as in Fig.1, is placed in series with the ejector e, which receives cooled waterfrom the cooler is through the pump 72..

As in Fig. 2, the pump p withdraws water of condensation from thecondenser a through the pipe 0 and discharges it through the pipe q,into the receiver rwhich is connected to the top of the condenser by apressure equalizing pipe 8, and the air and water delivered from thewater jet ejector are delivered through pipe f into the tank 2' fromwhich the air escapes and whence some of the water returns through pipecooler is and pipe m to the pump it for reuse, the remainder of thewater escaping through the overflow pipe or.

In the modified arrangement shown in Fig. 4, only one pump, namely h, isemployed. The air and vapor are discharged by the steam jet 9 from thecondenser a to the water jet ejector e which discharges into the tank iwhence the water passes into the cooler 72, which is here shown as beingindependent of the condenser, but may be constructed integrally with itif desired. Thence the water passes by a pipe m to the pump h by whichit is delivered through a pipe 6 to the water jet ejector e. The pipe 0leads from the bottom of the condenser to a water jet device 3 where thekinetic energy of the water delivered by the pump it through the pipe (2is utilized, by an inducing and propelling action, to deliver thecondensed steam water from the condenser a into the main ejector e.

In the modified arrangement shown in Fig. 5, a steam jet at g is used todischarge air and vapor by pipe 6 from condenser ato receiver r to whichthe water of condensation from condenser a is also delivered by pump 79through pipes 0 and g, steam from the jet 9 being simultaneouslycondensed in the said receiver. Air and vapor are withdrawn from thereceiver by the water jet ejector e which receives cooled water by wayof the pipe 6 and discharges the air and vapor through pipe f into tank2', whence the water flows by pipe j into the cooler 70. Water iswithdrawn from the cooler by pump h, through the pipe m, and againdelivered at a suitable pressure to the water jet ejector c. Any surpluswater produced in the water jet circulating system by condensation ofsteam, can flow by pipe n from tank 2' to the boiler feed tank w intowhich pump at, which withdraws the water from the receiver 1 by pipe t,discharges this water through pipe Although it is usually desirable forthermal reasons to pass the condensed steam water from the condenser tothe boiler feed tank without cooling it, as in Figs. 2 and 5, it maysometimes be desired to cool the condensed steam water and thereafteremploy it in the receiver or water jet ejector. For example, in Fig. 6,the cooler is located in the bottom of the condenser a and consists ofan open well. The condensed steam water falls into this well where it iscooled and is discharged by pump 72 into receiver a" into which the airand vapor are conducted from the condenser 64- through pipe 6 providedwith a steam jet 9 as in Fig. 5, the steam and vapor being condensed toa greater or less extent in receiver 1 by the water simultaneouslyadmitted thereto from pump 9.

Air and uncondensed vapor passfrom receiv'er through pipe 19 into thewater jet ejector a into which the cooled water from the receiver isdischarged by pump u and whence it passes with the air to the tank 2'.From this tank the required proportion of the water may be led back tothe cooler 70 by way of the pipe j as before, the surplus passing awayby the overflow pipe at.

As will be seen the arrangement shown in Figs. 2, 3, 5 and 6 accordingto which the condensed steam water is withdrawn from the condenser a bya head pump 72 and delivered into an elevated receiver 1' whence thewater is drawn off by a pressure pump'u and delivered to a feed watertank to or elsewhere, forms a convenient means for artificiallyproducing a head or pressure of water in cases where this is necessaryfor the satisfactory Working of water pumps.

used for withdrawing condensed steam water from a steam condenser. Suchan arrangement can advantageously be used in cases where air and Vaporare withdrawn from the main condenser by apparatus other than theimproved apparatus hereinbefore described for this purpose.

In the modified arrangement shown in Fig. 7, the receiver r is notconnected to the condenser by an equalizing pipe, and the air and vaporare drawn from the condenser and discharged into the receiver by meansof a steam jet 9 suitably disposed in pipe 6 the air and vapor beingwithdrawn through the pipe .2 by any suitable air extractor. Thecondensed steam water is delivered into the receiver as before by thepump 39, and when the vacuum in the receiver is less than that in thecondenser and the boiling point therefore higher, this water canadvantageously condense steam from the jet as well as the steam comingwith the air from the condenser. All the water condensed in the receiveris withdrawn by way of the ipe t by the water pump a, or may be withrawn by the same air pump which withdraws air and vapor. In the lattercase, the air and vapor may, if desired, be withdrawn from the receiverby a reciprocating air pump by the same pipe that withdraws the water.

What I claim is 1. In steam condensing plant, the combination with amain steam condenser of a conduit connected to the air and vapor outletof said condenser, a steam jet device arranged to deliver steam intosaid conduit in a direction away from said air and vapor outlet, andmeans for delivering liquid into said conduit at a part thereof inadvance of said steam jet device and in a direction away from saiddevice.

2. In steam condensing plant, the combination with a main steamcondenser of a fluid ejecting device operative by liquid flowingtherethrough, means for causing liquid to flow in a continuous mannerthrough said fluid ejecting device, a conduit between the air and vaporoutlet of said condenser and said fluid ejecting device and forming acontinuous passage with the latter .and a steam jet device arranged todeliver steam into said conduit in a direction toward said fluidejecting device.

3. In steam condensing plant, the combination with a main condenser anda conduit for leading air and vapor therefrom, of a water ejectingdevice connected to said conduit and forming a continuation thereof,means for causing water to flow continuously through said water e'ectingdevice and a steam 'et device arrange to deliver steam into sai conduitin a direction toward said water ejecting device so that the resultingsuperaerated water particles resulting from the condensation of thesteam will be driven into the water flowing through the water ejectingdevice and be discharged with the issuing water.

4. In steam condensing plant, the combination with a main condenser anda conduit for leading air and vapor therefrom, of a water ejectingdevice connected to said conduit so as to form a continuation thereof, awater cooling device, means for causing water to circulate through saidwater cooling device and water ejecting device, and a steam jet devicearran ed to deliver steam into said conduit in a irection toward saidwater ejecting device.

5. An air withdrawing and discharging device havin an inlet at one endadapted to be connecte to a steam condenser and a water discharge outletat the other end and comprising a water jet ejector and a steam jetdevice terminating within said device and directed toward said water etejector.

6. An air withdrawin and discharging device comprising an inIet pipe forair, a steam jet device extending into said pipe and a water jet ejectorhaving an inlet for water, said steam jet device and water jet ejectorbeing co-axially arranged.

7. An air withdrawing and discharging device com rising an air conduithavin a steam jet device extending into it, and a water jet ejectorhaving a water spraying device into which air can be discharged by theaction of steam issuing from said steam jet device.

8. An air withdrawing and discharging device comprising an air inlet andoutlet pipe with co-axially arranged steam and water ejecting devices.

9. An air withdrawing and discharging device comprising an air inletpipe, a steam nozzle extending into said pipe and a water sprayingdevice arranged in line with said steam nozzle and having an outlet fordischarge of the combined jet ofair and water produced in saidwithdrawing device.

10. An air withdrawing and discharging device comprising an inlet pipe,a steam nozzle therein,a water spray-nozzle ejector and a water jetnozzle, said nozzles being arranged in series with each other.

"11. An air withdrawing and discharging device comprising a pipe withsteam inlet nozzle, a water spraying nozzle and a water jet nozzle, saidnozzles being arranged co axially, the said pipe having a lateral inletfor air and the water nozzles having separate inlets for water.

12. An air and vapor withdrawing and discharging device comprising asteam ejecting device with separate inlet for air and vapor, a waterspraying nozzle and a water jet nozzle, these parts being arrangedcoaxially and in series with each other in the order mentioned withseparate water inlets for the water nozzles and a common outlet forcombined air, vapor and water.

13. An air and vapor withdrawing and discharging device comprising astraight pipe or conduit having at one end a lateral branch forconnection to a steam condenser and a steam jet device extendingco-axially into it, a water spray nozzle connected to the outlet end ofsaid pipe 'and having a lateral inlet for water and a water jet nozzleconnected to the outlet end of the water spray nozzle and having alateral inlet for water and a coaxial outlet for a combined jet of air,vapor and water.

14:. The combination with a steam con denser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be dis charged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, and means for causing Water to flow through said water jetejector.

15. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connect-ed to the air and vapor outlet and provided with a steamjet device whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, a tank into which said water jet ejector discharges, and meansfor causing water to flow from said tank back into said water jetejector.

16. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet'pipe so as to form a continuationthereof, a water cooling device, and means for causing water to flowthrough said water cooling device and water jet ejector.

17. The combination with a steam condenser having separate outlets forair and .vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, a tank open to the. external atmosphere and into which saidWater jet ejector discharges, a water cooling device connected to saidtank, and means for causing water to circulate through said watercooling device, water jet ejector and tank.

18. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided With a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, a tank open to the external atmosphere and into which saidwater jet ejector discharges, a water cooling device connected to saidtank and arranged at the base of said condenser, and means for causingwater to circulate through said water cooling device, water jet ejectorand tank.

19. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected tosaid outlet pipe so as to form a continuationthereof, and means for delivering water from said condenser into saidwater jet ejector.

20. The combination With a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof and comprising multiple nozzles, and means whereby water can becaused to flow through one or other or each of the nozzles at will.

21. The combination with a steam con denser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, and comprising a water spraying jet nozzle and a water jetnozzle arranged in series with each other and with said outlet pipe andsteam jet device, and means for causing water to flow through either orboth of said water nozzles at will.

22. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be dis- ,vapor and for water of condensation,of an air and vapor outlet pipe connected to the air and vapor outletand provided with a steam jet device whereby steam can be dischargedinto said pipe, a water jet ejector connected to said outlet pipe so asto form a continuation thereof and comprising multiple nozzles, a tankinto which said water jet ejector discharges, a water cooling deviceconnected to said tank, means for causing water to circulate throughsaid water cooling device, part of said water jet ejector and said tank,and means for delivering water from said condenser through another partof said water jet ejector.

24. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof, a tank into which said ejector discharges, a receiver incommunication with said condenser and water jet ejector, means forcausing water to flow from said tank, through said water jet ejector,means for delivering water from said condenser into said receiver andmeans for withdrawing water from said receiver.

25. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof and comprising a water spray jet nozzle and a water jet nozzlearranged in series with each other and with said pipe and steam jetdevice, a tank into which said water jet ejector discharges, a watercooling device connected to said tank, means for causing water tocirculate through said water cooling device, Water jet nozzle and tank,and means for causing water to flow from said condenser through thewater spray jet nozzle.

26. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of an air and vapor outletpipe connected to the air and vapor outlet and provided with a steam jetdevice whereby steam can be discharged into said pipe, a water jetejector connected to said outlet pipe so as to form a continuationthereof and comprisin multiple nozzles, a tank into which said water jetejector delivers, a water cooling device arranged at the base of saidcondenser and connected to said tank, a pump for causing water tocirculate through said cooling device and one of the nozzles of saidwater jet ejector, a receiver connected to said condenser, a pump forwithdrawing water from said condenser and deliverin it into saidreceiver and a pump for with rawing water from said receiver anddelivering it into another nozzle of the water jet ejector.

27. The combination with a steam condenser having separate outlets forair and vapor and for water of condensation, of a receiver connected tosaid condenser and into which air and vapor can pass from said condensermeans for producing a partial vacuum in said receiver, means fordelivering water of condensation from said condenser into said receiverand means for withdrawing fluid from said receiver.

28. The combination with a steam condenser, of a water jet ejector, anair and vapor conduit connecting said ejector to said condenser, avessel or receiver, a pump for withdrawing water of condensation fromsaid condenser and delivering it into said receiver, and a pump arrangedto continuously withdraw water from said receiver and force it throughsaid ejector.

29. The combination with a steam condenser, of a water circulatingsystem including a water jet ejector having an air and vapor inletconnected to said condenser, a vessel into which water of condensationis delivered from said ejector and a pump receiving water from saidvessel and discharging it through said ejector.

30. The combination with a steam condenser, of a water circulatingsystem including a water jet ejector connected to the air and vaporoutlet of said condenser, a vessel having an outlet for surplus waterand into which said ejector discharges, a pump for circulating waterthrough said system and means for delivering water of condensation fromthe condenser to the circulating system. c 31. The combination with asteam condenser, of a water circulating system comprising a vessel, awater conduit forming with said vessel a continuous circuit, a water jetejector arranged in said circuit and connected to the air and vaporoutlet of said condenser, a pump arranged to cause water to' circulatethrough said conduit and ejector and discharge into said vessel, andmeans for delivering water of condensation from said condenser into saidcircuit.

32. The combination with a steam condenser, of a closed receiverarranged at a higher level than the bottom of said condenser and in freecommunication with said condenser, a pump into which water flows fromsaid condenser and which delivers the water into said receiver, and asecond pump of the centrifugal type into which water flows from saidreceiver and by which such water is discharged, said second pump beingplaced at a sufficient distance below said receiver to produce the headof water on its inlet side necessary for the uniform and reliableworking of a centrifugal pump.

33. The combination with a steam condenser, of a tank having an outletfor excess water, a water jet ejector arranged to withdraw air from saidcondenser, a pump receiving water from said tank and delivering it tosaid ejector, said ejector delivering air from the condenser and waterfrom the pump into said tank and a pump for delivering water ofcondensation from said condenser to said tank.

- 34. The combination with a steam condenser having separate outlets forair and vapor and for Water of condensation, of an air outlet pipe withsteam jet device connected to the air and vapor outlet, a water jetejector connected to said outlet pipe so as to form a continuationthereof and into which aerated condensed steam particles are directlydelivered by their kinetic energy, a tank into which said water jetejector delivers, a water cooling device connected to said tank, a pumpadapted to cause water to circulate through said water cooling device,part of the water et ejector and tank, a receiver connected to saidcondenser by a pressure equalizing pipe, a pump adapted to withdrawwater from said condenser and deliver it into said receiver, and a pumpadapted to withdraw water from said receiver and deliver it into anotherpart of said water jet ejector.

35. The combination with a steam condenser of a water jet ejectorconnected to the air and vapor outlet of said condenser, a tank intowhich said ejector discharges and means for circulating water throughsaid ejector and tank.

36. The combination with a steam condenser of a water jet ejectorconnected to the air and vapor outlet of said condenser, a tank intowhich said ejector discharges and which receives water of condensationfrom said condenser, and a pump for circulating water through saidejector and tank.

37. The combination with a steam condenser and a vessel, of a watercirculating system comprising a water conduit arranged to form with saidvessel and the lower partof the interior of the condenser a continuouscircuit, a water jet ejector arranged in said circuit and connected tothe air and vapor outlet of said condenser and a pump arranged tocirculate water through said circuit.

Signed at est Hartlepool in the county of Durham England this fifth dayof October 1908.

DONALD BARNS MORISON.

Witnesses C. J. Snow, H. BOWEN.

